Years ago my kids came home with lice. It was going around their school. We found lice treatments from the pharmacy ineffective. Anyway I searched the web and found a testimony about using Listerine mouthwash to treat the lice. It works wonders. We used a spray bottle to wet their hair and scalp. It kills the lice and the eggs on contact. And it dissolves the glue from the eggs, making it much easier to pick them out.